The BAK Revolver X4TS T‑Slot rails for 2007–2021 Toyota Tundra 5.7 ft beds without the OE track system are sold as a fully assembled set of two replacement side rail assemblies. This rails‑only option does not include a cover and is intended as a direct replacement for the Revolver X4TS side rails, restoring the T‑slot mounting interface on compatible Tundra beds.
BAK 07-21 Toyota Tundra 5.7ft Bed (w/o OE Track Sys) Revolver X4ts T-Slot RAILS ONLY - NO COVER